Rotatable cutting tool



June 29 1926.

J. J. MCGUCKIN ROTATABLE CUTTING" TooL Filed Dec.F 2. 1924 l l l ATTORNEY,

Patented June 29, 1926.

'lNlTEB STATES narrar orties.

JOHN J". MCGUGKIN, F BROOKLYN, NEV YORK, ASSG-NOR TO LOIS SCHWAB, OF NEWYORK, N. Y., DOING BUSINESS UNDER THE NAME OF STEVENS & COMPANY.

ROTATABLE CTTING TOOL.

Application led December 2, 1924. Serial No, 753,427.

My invention relates to rotatable cutting tools, and particularly totools of a class which may be used for resurfacing, reaming anddrilling, it being my object to produce such a tool which is both simplein construction, positive in application and efficient and durable inoperation.

In the drawings, Fig. l is an elevation of my improved tool showing itapplied to an axle fork; Fig. 2 is a view of the tool taken on the line2-2 of Fig. 1; Fig. 3 is y.an end view of a cutting end of the tool;Figa 4 is an elevation of a modified formpof cutter sleeve; Fig. 5 is anend view of the same, looking down on Fig. 4; Fig. 6 is an end view ofthe upper member of the cutter sleeve shown in Fig. 4, looking up fromthe line 6 6; Figs. 7 and 8 are elevations of modifications; and Fig. 9shows a modified form of spindle.

n all the Vfigures similar parts are designated by similar referencenumerals.

The tool is assembled upon a bolt or spindle 1, adapted to pass throughthestandard openings in an axlev fork. Upon this bolt are slid twosleeves 3, 4, provided upon their Outer ends with transverse cuttingelements 5, 5, which are preferably formed of straight parallel ribs, ofsubstantially equal pitch on each side, sothat they will' cut equallywhen rotated in either directionl` The inner ends of these sleeves 3, 4,are provided with projecting ianges as 5, 5, and 6, 6, respectively,which are adapted to be straddled by the forked end 7 of an operatinghandle 8, the parts being preferably so proportioned that when the fork7 is slid between the sleeves 3 and 4 as shown in Fig. l, the cuttingfaces of the sleeves will normally lie approximately close to the innerfaces of the fork. The jaws of the fork 7 bearing-against the shouldersof the sleeves 3, 4, are preferably elliptical, as indicated in thedrawings, the4 pro-portions of the ellipses beingv determined by theamount of displacement desired for the sleeves 3 and 4.

In an aXle fork as shown in Fig l, the cutters may be turned to and froby swinging the handle 8; while t'he cutters may be held to duty bypressing down or raising the handle 8 so as to cause the ellipticalvjaws to act as cams forcing the cutting sleeves 3 and 4 strongly to dutyagainst the inner faces of the fork; and at the same time l the cutterscan be vinstantly released by withdrawing the forli vor by swinging thehandle 8 into 'horizontal position so as to release the cam action ofthe fork.

By giving the cutting ribs of the sleeves 3 and 4 equalptches in bothdirections, their cutting action against the fork surfaces lwill beequal in both directions of their rotation, under equal stresses on theoperating handle. I

It frequently happens that the inner face of thewupper arm of the forlrrequires much more work by a resurfacing tool than the face of the lowerarm. of the forli, for the weight of the car is carried by the upper armof the fork. If, therefore, it is desired not to cut away the face ofthe lower arm of they fork, a sleeve 4, having a plain surface, insteadof the ribbed cutters 5, may

be substituted for the sleeve 4.` In that case the cutter 3 willresurface the .upper arm of the forl, while thelower arm will not be cutin the operation of the tool.

In Figs-v4, 5 and 6 I have shown a modified form of cutter sleeve`wherein it is formed in two sections, the` upper of which 9 isprovidedwithpitched cutting 4teeth 10,

10, adapted to cut in one direction, and thetwo sections are providedwith` interineshing, radial teeth 11,11, of equal lateral pitch, sothat, when thev` pressure of the lever 8 is released, the lower section1Q may be turned back relative to the upper sec-` tion, but will gripvit, when pressure is applied, to drive it forward. lf this modllicationis usedthe sleeve4 will be givena suitable length to compensate for anydif ference in the combined length of the upper sections 9, 12.

Fig. 7V shows another modification wherel in the uppercutter sleeve 18and the lower terminal 14, are secured upon a spindle 15, the sleeve 13being fixed, as by 'a cotter bolt 16, while the terminal 14 has asliding connection with the spindle, which is per-- mitted by the recess17 in the spindle re ceiving the end of a set screw 18.

The lower end of the terminal 14 is pref erably pointed to facilitateits gripping a plain surface if it is presented in the use of the tool.spindle and sleeves form a unitary1 assembly In this form of the toolthe which is a convenient arrangement for a mechanic. V y Y Anothermodification is shown in Fig. 8, wherein the spindle is t'lie""'i"or niof a drill l"l9,"o"ve1' Which a short'Cu'ttingsleeve 2() may be slid, ifthel tool is to be used for lfS-Ulflllg, .hxilrllge .21, sleeveZQ, n.-ellofllg with. lewis 22; illY Sleeve v2.3 which is attached 'to thespindle drill by Cotter i' bolt 24. The saine movement 'of Athele'v'e'r8 which will press thel surfacing sleep-*ete @rinvenuta efhielriehaveeinen* 'ieee be* Having thus described my invention, wh at I ela'r'nand'desire tfseeurefby Letters Patf ent'of-tlie'UnitedStatesisi-e '-1.rotatable eutting'toor the. @01am nation"vv ith` 'a Is pinlle of'sepgr'able p ele :nts mounted 'threo`n",^`V and unitajlT 'Ineens Hro:Itatiiigsuhseparable elements andl fory p lodating relative diepiacemetfthem axially on the"spindle v to force 'tlein to duty in positedirections.

v'2. Ina" rotatablecutting tool, thecornbination with a spindle ofseparable elements n'ioui'ited' thereon,A and unitary 'means/prio?.

vided *with ''g'ripping elements for rtatiigsuch:'separable'elernents'and vvithv` ele-f ments "-o'r' producing'relative displacement of 'them a'Xia'llyon .tl-ie spindle-tio forcethein to duty in`oppsite directions.

3.111 a rtatable'cuttingtool, the conibination with aspi'ndle'of'separableelernents mounted thereon," and unitary iineans con! sistingoffa' 'forked lever insertedV between the separable elements forrotating them' and for producing relative displacement of them aXiallyonlthe spindletofforc'e ythe tool" to vcutting duty. 41H1 a rotatablecutting tool, the combination, with a guide' "spindle, of'u 'sleeveeleinents mounted thereon," one .thereofbefv ingfprovidedV ay serratedend to forni' a cutter' and unitary means for rotating 'the' cutter andfor pressing it to duty by forcing it away from the other sleeve.

5.-.ln a rotatable cutting tool, the co1nbin'ation, with a guidespindle, of sleeve elen'ients mounted thereon, one thereof beingprovided With straight parallel serrations in `one end toV foi-1n acutter and unitary means for rotating the `cutter and for press ing itto duty by forcing the sleeves in opp'ositer directions.

6. In a rotatable cutting tool, the coinbini-tin,K `with Ya: guidespindle, of opposed sleeve elenientsniounted thereon,ea ch there olfkbeing', ded With af serrated 'Cutter 'and unitary niea'nsfforrotatingthe cuttersl and fell" ijleslfe them, ,tio duty i'n' OPPQSt@ lidi.-mtpsvv A. y 1

7; Ina rotatable cutting tool, the combina edm-with* anregende', ofSieve elements mounted tliereonfone thereof being provided with ""'afid"end-1:0. fim"`."011tter and with eingaeeabe mensa! irs 6p' @sie 11danduiiita yi means'adapted to' eno "saiden',D

mame-ans', 'te 'fo'.tf" iufter; and to bear "against'tlie opposed endsof" the sleevesjto'pressthe cutter to' duty.

Sjln arotatabl'e cutting tool, the vcombination, 'with a guidespindle",of sleeve elements inounted thereoiuone thereif being provided With aserratedendl tofforin` a cutter and ivitli engageableineans at itsopposed end and' unitary" means adapted i to 'engage with' said @seeingmeans. to` rotate .the better, 'and' being provided with earn 'elements'to bear against 'theioppo'sefdf ends fof the "sleeves to pressthecutter to A f" 9'.' In a rotatable cutting tool, the combinatiOn,aguide spindle of sleeveelenients mounted thereon, yonev thereofbeingprovided v vith'cutting elements yori its outer-end' and withaliand-leffork engaging element, a handie, prvideagwiul *a ferie adaptedto., 'be' insert/edf b etfveen said sleeves to strad'clle 'thespindleandfto'engagetvith the cutter to ro tate "the saine, said: forkybeing provided with, ajcaiii ele'inent for forcing-,the sleevesapartbysvvingn'g the hand-le in the plane of the spindle. f

"`10. In al rotatable cutting-tool, the combination, With a'guide:spiiidle, `of sleeve eleniente'1inountedfthereon,v oney thereof beingprovided" Y'vitlra` terminal cutter and with' able'rneaiisat its`opposite' end, and n'ieans 'ad-apted'to engage with said `ii1gfrnea`ns',fto rotate: the cutter and to to' Ypress thecutt'eii to

